<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Config
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Json.php 23294 2010-11-05 00:27:34Z ramon $
 */

/**
 * @see Zend_Config_Writer
 */
require_once 'Zend/Config/Writer/FileAbstract.php';

/**
 * @see Zend_Config_Json
 */
require_once 'Zend/Config/Json.php';

/**
 * @category   Zend
 * @package    Zend_Config
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Config_Writer_Json extends Zend_Config_Writer_FileAbstract {
	/**
	 * If we need to pretty-print JSON data
	 *
	 * @var boolean
	 */
	protected $_prettyPrint = false;
	
	/**
	 * Get prettyPrint flag
	 *
	 * @return the prettyPrint flag
	 */
	public function prettyPrint() {
		return $this->_prettyPrint;
	}
	
	/**
	 * Set prettyPrint flag
	 *
	 * @param  bool $prettyPrint PrettyPrint flag
	 * @return Zend_Config_Writer_Json
	 */
	public function setPrettyPrint($flag) {
		$this->_prettyPrint = ( bool ) $flag;
		return $this;
	}
	
	/**
	 * Render a Zend_Config into a JSON config string.
	 *
	 * @since 1.10
	 * @return string
	 */
	public function render() {
		$data = $this->_config->toArray ();
		$sectionName = $this->_config->getSectionName ();
		$extends = $this->_config->getExtends ();
		
		if (is_string ( $sectionName )) {
			$data = array ($sectionName => $data );
		}
		
		foreach ( $extends as $section => $parentSection ) {
			$data [$section] [Zend_Config_Json::EXTENDS_NAME] = $parentSection;
		}
		
		// Ensure that each "extends" section actually exists
		foreach ( $data as $section => $sectionData ) {
			if (is_array ( $sectionData ) && isset ( $sectionData [Zend_Config_Json::EXTENDS_NAME] )) {
				$sectionExtends = $sectionData [Zend_Config_Json::EXTENDS_NAME];
				if (! isset ( $data [$sectionExtends] )) {
					// Remove "extends" declaration if section does not exist
					unset ( $data [$section] [Zend_Config_Json::EXTENDS_NAME] );
				}
			}
		}
		
		$out = Zend_Json::encode ( $data );
		if ($this->prettyPrint ()) {
			$out = Zend_Json::prettyPrint ( $out );
		}
		return $out;
	}
}
